package study2019.daily;

import java.util.concurrent.ConcurrentHashMap;

import org.apache.commons.lang.StringUtils;
import org.junit.Test;

import study2019.demo.SuperExample;
import study2019.demo.SuperExtendExample;

public class September {
	@Test
	public void test1() {
		System.out.println(StringUtils.isEmpty(null));
	}

	@Test
	public void test2() {
		SuperExample e = new SuperExtendExample(1, 2, 3);
		e.func();
	}


	@Test
	public void test3() {
		ConcurrentHashMap<String, String> concurrentHashMap = new ConcurrentHashMap<String, String>();
	}


}
